SELIGMAN, ARIZONA

Period of Record General Climate Summary - Growing Degree Days

Station:(027716) SELIGMAN
From Year=1904 To Year=2012
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M 39 72 165 325 573 814 1035 974 765 475 173 45 5454
40 S 39 111 276 601 1173 1988 3022 3996 4761 5236 5409 5454 5454
45 M 7 19 69 194 420 664 880 819 615 326 75 8 4096
45 S 7 26 95 289 709 1373 2253 3072 3686 4013 4088 4096 4096
50 M 1 3 19 90 274 514 725 664 465 191 21 0 2967
50 S 1 3 23 112 386 901 1625 2289 2755 2945 2966 2967 2967
55 M 0 0 3 29 148 366 570 509 318 84 3 0 2029
55 S 0 0 3 32 180 546 1115 1624 1942 2026 2029 2029 2029
60 M 0 0 0 5 57 225 415 354 179 23 0 0 1260
60 S 0 0 0 5 63 288 703 1057 1236 1259 1260 1260 1260
Corn Growing Degree Days
50 M 70 100 185 288 429 528 641 616 508 369 190 82 4007
50 S 70 170 355 643 1073 1601 2242 2858 3366 3735 3925 4007 4007
M = Monthly Data
S - Running sum of monthly data.
Growing Degree Day units are computed as the difference between the daily average temperature and the base temperature. (Daily Ave. Temp. - Base Temp.) One unit is accumulated for each degree Fahrenheit the average temperature is above the base temperature. Negative numbers are discarded. Example: If the days high temperature was 95 and the low temperature was 51, the base 60 heating degree day units is ((95 + 51) / 2) - 60 = 13. This is done for each day of the month and summed.
Corn Growing Degree Day units have the limitations that the maximum daily temperatures greater than 86 F are set to 86 F and minimums less than 50 F are set to 50 F.
Table updated on Oct 31, 2012
Months with 5 or more missing days are not considered
Years with 1 or more missing months are not considered

Western Regional Climate Center, wrcc@dri.edu